# - Try to find Windows Installer XML
# See http://wix.sourceforge.net
#
# The follwoing variables are optionally searched for defaults
#  WIX_ROOT_DIR:            Base directory of WIX2 tree to use.
#
# The following are set after configuration is done: 
#  WIX_FOUND
#  WIX_ROOT_DIR
#  WIX_CANDLE
#  WIX_LIGHT
# 
# 2009/02 Petr Pytelka (pyta at lightcomp.cz)
#

MACRO(DBG_MSG _MSG)
#  MESSAGE(STATUS "${CMAKE_CURRENT_LIST_FILE}(${CMAKE_CURRENT_LIST_LINE}):\n ${_MSG}")
ENDMACRO(DBG_MSG)


# typical root dirs of installations, exactly one of them is used
SET (WIX_POSSIBLE_ROOT_DIRS
  "${WIX_ROOT_DIR}"
  "$ENV{WIX_ROOT_DIR}"
  "$ENV{ProgramFiles}/Windows Installer XML"
  )


#DBG_MSG("DBG (WIX_POSSIBLE_ROOT_DIRS=${WIX_POSSIBLE_ROOT_DIRS}")

#
# select exactly ONE WIX base directory/tree 
# to avoid mixing different version headers and libs
#
FIND_PATH(WIX_ROOT_DIR 
  NAMES 
  bin/candle.exe
  bin/light.exe
  PATHS ${WIX_POSSIBLE_ROOT_DIRS})
DBG_MSG("WIX_ROOT_DIR=${WIX_ROOT_DIR}")


#
# Logic selecting required libs and headers
#
SET(WIX_FOUND OFF)
IF(WIX_ROOT_DIR)
  SET(WIX_FOUND ON)
ENDIF(WIX_ROOT_DIR)


# display help message
IF(NOT WIX_FOUND)
  # make FIND_PACKAGE friendly
  IF(NOT WIX_FIND_QUIETLY)
    IF(WIX_FIND_REQUIRED)
      MESSAGE(FATAL_ERROR
        "Windows Installer XML required but some files not found. Please specify it's location with WIX_ROOT_DIR env. variable.")
    ELSE(WIX_FIND_REQUIRED)
      MESSAGE(STATUS 
        "ERROR: Windows Installer XML was not found.")
    ENDIF(WIX_FIND_REQUIRED)
  ENDIF(NOT WIX_FIND_QUIETLY)
ELSE(NOT WIX_FOUND)
  SET(WIX_CANDLE ${WIX_ROOT_DIR}/bin/candle.exe)
  SET(WIX_LIGHT ${WIX_ROOT_DIR}/bin/light.exe)
#  MESSAGE(STATUS "Windows Installer XML found.")
ENDIF(NOT WIX_FOUND)


MARK_AS_ADVANCED(
  WIX_ROOT_DIR
  WIX_CANDLE
  WIX_LIGHT
  )

#
# Call wix compiler
#
# Parameters:
#  _sources - name of list with sources
#  _obj - name of list for target objects
#
MACRO(WIX_COMPILE _sources _objs _extra_dep)
  DBG_MSG("WIX compile: ${${_sources}}")
  FOREACH (_current_FILE ${${_sources}})
    GET_FILENAME_COMPONENT(_tmp_FILE ${_current_FILE} ABSOLUTE)
    GET_FILENAME_COMPONENT(_basename ${_tmp_FILE} NAME_WE)

    SET (SOURCE_WIX_FILE ${CMAKE_CURRENT_SOURCE_DIR}/${_current_FILE} )
    DBG_MSG("WIX source file: ${SOURCE_WIX_FILE}")

    # Check whether source exists
    IF(EXISTS ${SOURCE_WIX_FILE})
    ELSE(EXISTS ${SOURCE_WIX_FILE})
      MESSAGE(FATAL_ERROR "Path not exists: ${SOURCE_WIX_FILE}")
    ENDIF(EXISTS ${SOURCE_WIX_FILE})

    SET (OUTPUT_WIXOBJ ${_basename}.wixobj )

    DBG_MSG("WIX output: ${CMAKE_CURRENT_BINARY_DIR}/${OUTPUT_WIXOBJ}")
    DBG_MSG("WIX command: ${WIX_CANDLE}")

    ADD_CUSTOM_COMMAND( 
      OUTPUT    ${CMAKE_CURRENT_BINARY_DIR}/${OUTPUT_WIXOBJ}
      COMMAND   ${WIX_CANDLE}
      ARGS      ${WIX_CANDLE_FLAGS} ${SOURCE_WIX_FILE}
      DEPENDS   ${SOURCE_WIX_FILE} ${${_extra_dep}}
      COMMENT   "Compiling ${SOURCE_WIX_FILE} -> ${OUTPUT_WIXOBJ}"
    )
    SET(${_objs} ${${_objs}} ${CMAKE_CURRENT_BINARY_DIR}/${OUTPUT_WIXOBJ} )
    DBG_MSG("WIX compile output: ${${_objs}}")

  ENDFOREACH (_current_FILE)
ENDMACRO(WIX_COMPILE)

#
# Call wix compiler
#
# Parameters:
#  _sources - name of list with sources
#  _obj - name of list for target objects
#
MACRO(WIX_COMPILE_ALL _target _sources _extra_dep)
  DBG_MSG("WIX compile all: ${${_sources}}, dependencies: ${${_extra_dep}}")

  ADD_CUSTOM_COMMAND( 
      OUTPUT    ${_target}
      COMMAND   ${WIX_CANDLE}
      ARGS      ${WIX_CANDLE_FLAGS} -out "${_target}" ${${_sources}}
      DEPENDS   ${${_sources}} ${${_extra_dep}}
      COMMENT   "Compiling ${${_sources}} -> ${_target}"
    )

ENDMACRO(WIX_COMPILE_ALL)


#
# Link MSI file
#
# Parameters
#  _target - Name of target file
#  _sources - Name of list with sources
#
MACRO(WIX_LINK _target _sources _loc_files)
  DBG_MSG("WIX command: ${WIX_LIGHT}\n WIX target: ${_target} objs: ${${_sources}}")

  SET( WIX_LINK_FLAGS_A "" )
  # Add localization
  FOREACH (_current_FILE ${${_loc_files}})
    SET( WIX_LINK_FLAGS_A ${WIX_LINK_FLAGS_A} -loc "${_current_FILE}" )
    DBG_MSG("WIX link localization: ${_current_FILE}")
  ENDFOREACH (_current_FILE)
  DBG_MSG("WIX link flags: ${WIX_LINK_FLAGS_A}")

  ADD_CUSTOM_COMMAND( 
      OUTPUT    ${_target}
      COMMAND   ${WIX_LIGHT}
      ARGS      ${WIX_LINK_FLAGS_A} -out "${_target}" ${${_sources}}
      DEPENDS   ${${_sources}}
      COMMENT   "Linking ${${_sources}} -> ${_target}"
    )

ENDMACRO(WIX_LINK)
